You’ll see an option for Add to Archive - select it. To encrypt files, you just need to right-click the folder or file. Once you’ve identified files you want to encrypt and WinRar is installed, you can get started with the process.
Before you start, though, you may want to take note of the files or folders you want to encrypt so you aren’t digging around for them. Using the WinRar tool to encrypt files is easy. The specific information you need is listed under System type. All you have to do is click on the Windows icon on your home screen and search for System. If you don’t know that information off-hand, there’s a simple way to check.